Magnetic head driving device with prerecording energization

Details Magnetic head driving device with prerecording energization Magnetic head driving device with prerecording energization

1995-12-11

1996-12-24

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

General recording or reproducing

Thermomagnetic recording or transducers

360 61, 360 46, 369 13, G11B 509, G11B 1512, G11B 1100

Patent

active

055878512

ABSTRACT:
A magnetic head driving device is disclosed. The device includes an inductor for generating a magnetic field, the inductor having a pair of terminals. The device has a first auxiliary coil for storing electromagnetic energy, the first auxiliary coil being connected to one of the terminals of the inductor at a first node, second auxiliary coil for storing electromagnetic energy, the second auxiliary coil being connected to the other terminal of the inductor at a second node, first main switch connected to the first node, second main switch connected to the second node, and control circuit for receiving a first signal indicating generation of a magnetic field by the inductor and a second signal indicating the direction of a magnetic field generated by the inductor and for outputting the second signal for a predetermined period of time in accordance with the first signal to alternately turn on or off the first main switch and the second main switch.

REFERENCES:
patent: 5121369 (1992-06-01), Makansi
patent: 5220467 (1993-06-01), Zucker
patent: 5229902 (1993-07-01), Zucker et al.
patent: 5278809 (1994-01-01), Ogata
patent: 5278818 (1994-01-01), Zucker et al.
patent: 5351155 (1994-09-01), Ishii
Patent Abstract of Japan, vol. 15, No. 395 (P-1260) 7 Oct. 1991, & JP-A-31 57 839 (Matsushita Electric Ind. Co.).
EPO Search Report.

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